The Winter Crystal Halo 2018 (also known as the Christmas Halo, Winter Halo, or Crystal Halo) was available during the Christmas 2018 event on Royale High and also through January of 2019. The halo was no longer available on February 1, 2019. Its design features a neon blue donut shape, with white snowflakes around the outside. The Winter Crystal Halo's fountain stories (presumably) may not be of any importance to the luck of winning the halo. If the player was successful in winning the halo, their screen would turn blue.
If the player was successful in winning the Winter Crystal Halo, they would also receive the "Soft Snow" badge. A total of 19,276 users own it. The description reads, "Bundled up in knit warm layers with cold air on your face".